Merge pull request #55 from gd32-rust/compare

Add missing crate links to README.

README.md

@@ -108,9 +108,15 @@ This project is still young and there's a lot to do!
 
 ## Supported Device Families
 
-[![crates.io](https://img.shields.io/crates/v/gd32e2.svg?label=gd32e2)](https://crates.io/crates/gd32e2)
-[![crates.io](https://img.shields.io/crates/v/gd32f1.svg?label=gd32f1)](https://crates.io/crates/gd32f1)
-[![crates.io](https://img.shields.io/crates/v/gd32f2.svg?label=gd32f2)](https://crates.io/crates/gd32f2)
+| Crate | Supported devices | Notes |
+| -------------------------------------------------------------------------------------------------------- | -------------------------------------- | ---------------------------------- |
+| `gd32c1` | GD32C103, GD32C113 | Not yet published |
+| [![crates.io](https://img.shields.io/crates/v/gd32e1.svg?label=gd32e1)](https://crates.io/crates/gd32e1) | GD32E103 | |
+| [![crates.io](https://img.shields.io/crates/v/gd32e2.svg?label=gd32e2)](https://crates.io/crates/gd32e2) | GD32E230, GD32E231 | |
+| [![crates.io](https://img.shields.io/crates/v/gd32e5.svg?label=gd32e5)](https://crates.io/crates/gd32e5) | GD32E503, GD32E505, GD32E507, GD32E508 | |
+| [![crates.io](https://img.shields.io/crates/v/gd32f1.svg?label=gd32f1)](https://crates.io/crates/gd32f1) | GD32F130, GD32F150, GD32F170, GD32F190 | |
+| [![crates.io](https://img.shields.io/crates/v/gd32f2.svg?label=gd32f2)](https://crates.io/crates/gd32f2) | GD32F205, GD32F207 | |
+| `gd32f3` | GD32F303, GD32F305, GD32F307 | Not published due to name conflict |
 
 Please see the individual crate READMEs for the full list of devices each crate
 supports.